Merodon it is separated by its simple posterior thighs, and 

 from EristaUs by the eyes of the males not being contiguous. 

 The following are British species of this handsome genus. 



1. H. lineatus Fab. — Meig. pi. 32. yi 7 c?- — muscaria Panz. 



20. 24. 



Fem. Ochreous, antennae ferruginous at the apex, face produced and co- 

 nical (f. 2*), thorax with 3 broad and 2 narrow black stripes, the centre 

 one cuspidate behind : abdomen black, with a line under the scutellum 

 and a spot on the margin of each segment, 3 lunulate spots on each side 

 and the apex gray : legs ferruginous, black at the base, posterior thighs 

 black at the middle and tips ; tibiae with a black ring near the base, most 

 evident in the posterior pair, and another at the tip ; tarsi fuscous, middle 

 pair ochreous, except at the apex. 



Taken near London. 



2. H. lunulatus Meig. 3. 370 ; 2. pi. 32. / 9. abdomen. 

 Thorax yellowish, with 3 black stripes ; abdomen black with 3 ochreous 



lunules on each side ; antennae rufous. — Meig. 



Said to have been taken in June on Flags [Iris pseiidacori F) 

 in ponds, Copenhagen Fields, Mr. Ingpen. Was it not the 

 following? 



3. H. transfugus Linn. — Meig. pi. 32. J] 8 <^. 



Thorax with 3 fuscous stripes ; abdomen linear black, with 3 sulphur- 

 coloured lunules on each side ; antennae ferruginous. — Meig. 



May and beginning of June on Sedges in Clay-pits, New 

 Forest, Mr. Dale and Mr. Rudd ; Putney, Mr. W. Clifton. 



4. H. trivittatus Fab. — parallelus Harris, pi. 15. Jl 8? 

 Thorax straw-colour with 3 black stripes ; abdomen black, with 3 un- 

 equal interrupted yellow bands, beneath whitish. — Meig. 



Charmouth, Chedder Cliffs and Hum, Mr. Dale. 



5. H. pendulus Li7i7i. — Panz. 22. 21. — Don. 1. pi. 31. Jl 2. 

 Thorax straw-colour with 3 black stripes ; abdomen black, with 3 un- 

 equal interrupted yellow bands, belly pale before, black behind, incisures 

 white. — Meig. 



In April, Glanvill's Wootton; June, hedges, and New 

 Forest. 



6. H. similis Curt. Guide, 1245. 6. 



Ochreous, antennae black, crown of the head and 3 broad stripes on the 

 thorax black : abdomen above black, margins of segments ochreous, a large 

 spot on each side the 2nd joint and a lunulate one on the 3rd bright ochre, 

 a narrower lunulate one on each side the 4th, base of the 5th gray : legs 

 ochreous, base black, apex of tibiae and base of tarsi in fore pair and a spot 

 only on the latter in the 2nd pair blackish, posterior legs black, apex of 

 thighs and base of tibiae ochreous. 



The middle of July, Dover. J. C. 



7. H. Ruddii Curt. Brit. Ent. pi. 429 ? . 



I have named this fine species in honour of the Rev. G. T. 

 Rudd, and L. Rudd, Esq. ; to the former gentleman I am 

 indebted for the specimen figured, which with another was 

 captured by his brother near Yarmouth, in Norfolk, last 

 summer. 



The Plant is Silene nutans (Nottingham Catchfly), which I 

 gathered last June at the top of the Cliff near St. Lawrence, in 

 the Isle of Wisht. 



